264 Mr. J. E. Gray on some neiV^Genera 



and throat paler ; streak along the side of the body between the two 

 colours pure black ; whiskers black ; ears hairy, slightly pencilled ; 

 tail flat, rather narrow, black and red varied, with long white tips to 

 the hairs. Length, body and head, 7£ inches ; tail, 4 \ ; hind foot, 2. 



Hab. Columbia, Capt. Belcher, R.N., C.B. 



Sciurus Richardsonii. Black, brown, varied ; hairs black, with a 

 broad subcentral brown band ; cheeks and the sides brown ; middle 

 of the throat, chest, belly and the inner side of the limbs white ; 

 hair of tail with long white tips ; feet black ; ears hairy. Length of 

 the body and head, — ? ; of tail, — ? 



Hab. Hondurus. Brit. Mus. 



Tamias Hindei. Rufous brown, with three rather close black 

 streaks on the middle of the back, the outer ones edged with a white 

 streak, having an indistinct black edge to it on its outer side ; head 

 darker, with a reddish streak from the end of the nose inclosing the 

 eye ; throat and beneath white ; feet rusty brown ; hair of body dark at 

 their base ; tail roundish ; hair red at the base, with a broad black sub- 

 terminal band and a whitish tip ; ears hairy, blackish, hinder edge and 

 tip white. Length, body and head, 5| inches ; tail, 4J ; hind foot, 1-J. 



Hab. California, Capt. Belcher, R.N., C.B., &c. Brit. Mus. 



Named in honour of Mr. Richard Brinsley Hinde, the surgeon of 

 Captain Belcher's surveying vessel, who laboured most industriously 

 during the voyage to collect specimens and facts connected with the 

 countries he visited. 



Xerus trivittatus. Dark brown, minutely grisled with gray ; outer 

 sides of the limbs with longer brown hair ; broad streak on each side 

 of back, belly, cheeks, lips, throat, lower part of sides and inside 

 of limbs white ; a narrow streak on the middle of the back gray- 

 brown ; tail broad, hair whitish, with three broad black bands, one 

 near the base and the upper one some distance from the tip. 



Hab. India ? 



Easily known from the other species by the narrow vertebral band 

 and the darker colour. 



Fam. Leporid^e. 



Dasyprocta punctata. Uniformly grisled with greenish yellow ; 

 hair black with greenish yellow rings ; hair of the back scarcely elon- 

 gate and ringed to the base ; throat yellow ; feet rather blacker. 



Hab. South America. 



Dasyprocta nigra. Black, grisled with white ; shoulder and 

 haunches blacker ; legs black ; throat gray ; belly rather grayer ; hair 

 of the back elongated, flattened, white at the base. 



Hab. South America. 



Dasyprocta albida. Whitish gray, nearly uniform, the hair of the 

 back elongated, white at the base. 



Hab. St. Vincent's, West Indies. 



Size of a guinea-pig, Cavia Cobaya. \ 



Fam. MuRiDiE. 

 Nesokia, n. g. 

 Cutting teeth very large, flat in front and smooth ; grinders 3'3 ; 



